genesisl2 genesisl2
  • 16-07-2019
  • Mathematics
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7z-[(2z+y)-(-5y+3z)+9]-12z

Respuesta :

mohsinalikhan505960
mohsinalikhan505960 mohsinalikhan505960
  • 16-07-2019

Answer:

-4z-6y-9

Step-by-step explanation:

7z-[(2z+y)-(-5y+3z)+9]-12z

=7z-[2z+y+5y-3z+9]-12z

=7z-2z-y-5y+3z-9-12z

=7z-2z-12z+3z-y-5y-9

=-4z-6y-9

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